Shock-absorbing device.



G. R. SMITH. SHOCK ABSORBI NG DEVICE.

APPLICATION FILED JUNE 3. 190' PATENTED MAR. 10, 1908.

UNITED STATES PATENTOFFICE.

GEORGE B. SMITH, OFDOVER, NEW iIAMrsHIRE.

SHOGK-ABSORBING DEVICE.

To all whom it may concern:

'Be it known that I, GEORGE B. SMITH, ,of Dover, in the county of Straflord and State of New Hampshire, have invented a new and useful Improvement in Shock-AbsorbingDevices, of which the following'is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification, in explaining its nature.

My invention relates to an improvement in that type of shock absorber especially adapt:

ed to be used with motor vehicles althou h it is equally applicable to any vehicle w ere such kind of evice could advantageously be used.

The object of my invention is to rovide a a shock absorber of simple construction which i can be made and sold at comparatively small cost and be ap lied to any vehicle.

It is the furth so form or adapt the device that it may be used in conjunction with the supporting .springs of a vehicle and will act not only to of the supporting springs in connection-withmon form of elliptical spring althougl:i 'of which the device is used. .Fig. 3 shows a section on the line 3-3 of Fig. 1'. Fig. 4 shows in side elevation a modification of the device to which'reference will hereinafterbe made.'

I have shown the device used with 'a'comconnection spr ng. awmgs, A

coursethe device may be used in with any form ofarch-supportin Referring, therefore, to the represents'an elliptical supportin terposed between a art A, w 'c corresponds with the sill o a vehicle or part. supactingas a ported and the part or axle A ass of support. Contained within the sup;- porting spring Ais an auxiliarys ring.

with a loop. This spring is preferab y made of acontinuousband of metal "and slightly elliptical 'in form auxiliary spring is held in place by frnea'ns of- Specificatiorr of Letters Patent.

Application filed June a, 1907. Seria1No. 377,080.

er object of my invention to axle or supporting artA posite-that to whic the s ring .Bi ssecureds ringin-v as shown in Fig. 1." The.

Patented March 10, 1908.

a strap 1) which preferably connects with the part supported A. From its point of. at-

tachment the spring-B extends in the directionof the supporting part A but referably not so far as to bearagainst suc or that portion of the su portin resting thereon. The effect is that t iary spring will have no normal su action, butwill only supplement t e .main supporting spring. A after the auxiliary spring has become depressed a suflicient porting amount. to enga e with the main spring or.

flxt The advantage of other resisting ure. this cofistructlon is that the part supported A will normally have the easily yielding support of the spring A which becomes reinforced onlywhen the spring A has become After the depressed a determinate amount. delpress'ion, of the spring A upon the sudden re e part spring e auxilase of the pressure or force acting to depress the spring it will have a reflex or back ash which unless rectified is oftentimes more liable to break the sprin than -.a force. or

pressure acting to depress 1t, and the manner of resisting or governing such reflex or backlash of the spring A forms an essential feature of my invention. therefore of enabling the-spring B to yieldingly governor control the reflex of the main For the purpose supporting spring A I have combined with thls spring a stop 1) comprising a metal band or strap which-1s preferably secured to the or to that part opoccupy a nomnallyinoperative position as before described and rinlorcethe spring A only after a determinate depressionthereof. The stop b has, however, the efiect-of holding, the auxiliary .sprin whereby'it may be drawn out or distorte which acts to rate- 111; the mainsu porting spring A. In other words, when t e reflex force or' back dash ofthe springacts to draw out such spring eyon its normal position the retained by the stop, ,will act to prevent by its yielding retention such drav ring out or distortion.

plied to a ,veliicle spring, whether such spring be elliptical pr other form. I: prefer that the auxiliary by. the same force 100..

main sup ortin auxiharyspring B,-

v The device isjve'ry simple .and 'canbeaphaving any kind of a.

spring shall'be a continuous band as shown v in Figs. 1 and 2. However, such a constructlon 1s not necessary as may be seen in the construction shown in Fig. 4 where an auxlliary spring B is shown acting in precisely the same manner as the spring B and which spring B is not continuously elliptical in 7 form, but is provided with ends 6 b which of the United States:

1. The combination with a main compressi- I ble arched' spring of an auxiliary spring with 'a loop which auxiliary spring is contained within the arch of said main s ring, a stop passing through the loop of sai auxiliary spring whereby upon the reflex of said main sprlng after compression thereof said auxiliary spring will engage said stop and become drawn out thereby yieldingly stopping the reflex of said main spring.

2. The combination with a main compressible arched spring of an auxiliary spring with a loop which auxiliary spring is contained within the arch of'said main. spring,

said auxiliary spring being mountedto occupy a osition whereby it may reinforce said main spring only after compression, thereof, .a' stop passin through the loop of said auxiliary spring w iereby upon the reflex of said main spring after compression thereof said auxiliary spring will engage said step and become drawn out thereby stopping the reflex of said main spring.

GEORGE B. SMITH;

In the presence of- JAs. F. GOODWIN, WM. P. ROBERT. 

